Chord Finder
Two ways in. Have a recording? Upload it and get every chord, the key and the tempo. Have the notes? Pick them on a keyboard or a guitar neck below and get the chord's name — and how to play it.
Name a chord
Tap the notes you're holding. The lowest one counts as the bass, so inversions come back as slash chords. Nothing is uploaded — it all runs on this page.
Tap keys to build a chord — or start from a common one above.
Two kinds of chord finder, one page.
From a recording
You have the song, not the chords.
Upload the audio and get the full progression on a timeline, aligned to the beat, with the key and tempo. Best for learning a song by ear, charting a demo, or checking a cover against the original.
From notes
You have the notes, not the name.
A shape you found by noodling, a voicing from sheet music, a chord in a tab with no label. Pick the notes and get the name, the other names it can go by, and a diagram for guitar, piano or ukulele.
By instrument
Guitar chord finder
Chords from guitar recordings, with open and barre shapes for each one.
Piano chord finder
Chords from piano recordings, with every inversion on the keyboard.
Ukulele chord finder
Chords from uke recordings, read back for four strings.
Chord player
Know the name already? Hear any chord, see its notes and build a sequence.
Chord finder, answered
What is a chord finder?
A chord finder tells you which chord you are looking at or listening to. There are two kinds: one listens to a recording and lists the chords as they happen, the other takes a handful of notes and gives you the chord's name. This page does both — upload a song for the first, or pick notes on the keyboard or fretboard above for the second.
How do I name a chord from its notes?
Choose Piano or Guitar, then tap the notes you are playing — keys on the keyboard, or one fret per string on the neck. As soon as there are three different notes, the chord name appears, with any other names the same notes can have. Press Play to hear it and check it against what you are playing.
Can it find the chords in a song?
Yes. Upload an MP3 or WAV and ChordSonic returns the whole chord progression lined up with the beat, plus the key and the tempo. That is the better route when you have a recording: you don't need to work out a single note first.
What does a slash chord like C/E mean?
The letter after the slash is the bass — the lowest note. C/E is a C major chord with E at the bottom instead of C, also called the first inversion. The name finder reads the lowest note you pick as the bass, so E–G–C comes back as C/E, while C–E–G is plain C.
Why does it show more than one chord name?
Because the same notes can genuinely be more than one chord. A–C–E–G is Am7, but the same four notes also spell C6 — which name fits depends on the bass. The most common reading comes first; the others are listed so you can pick the one that fits the song's key and bass line.
Do I need an account?
Not for naming chords — the notes tool works right in your browser, with nothing to sign up for and nothing sent anywhere. Uploading a song works without an account too, for your first tracks.